JP2002100132A - Disk unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a small disk unit which can record and reproduce two kinds of media cartridges with high reliability and at a lower cost. SOLUTION: A traverse base which disposes two head traverse mechanisms symmetrically or perpendicularly while centering on one spindle is rotated so that a head suitable for an inserted cartridge come. A head which is not used is transferred to the position of the outer peripheral side of a disk which does not interfere the cartridge, and is covered with dust-proofing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device capable of recording and reproducing information on a cartridge containing two different types of disks.

[0002]

2. Description of the Related Art As represented by recent DVDs, new disk standards and disk technologies are being proposed and studied one after another for large-capacity optical disks, and disk drives conforming to the new standards are commercialized. At this time, it is becoming essential to have backward compatibility so that recording and reproduction can be performed even on a disk medium of the current standard. Originally, it is ideal that these different disks can be recorded and reproduced with one optical head. However, there are cases where two heads have to be mounted on one disk device during technical and development periods. In such a case, usually, a composite type head configuration in which two heads are combined is often used. However, if different compatible disks are housed in a cartridge, the head of the combined type is too large in size, so that it often does not fit in the size of the cartridge window. In this case, two drives having a unit of spindle, head, and traverse have to be provided in one disk device. However, such a configuration has a problem that the size of the disk device is increased and the cost is increased, and the number of cartridge insertion ports is two, which is troublesome for the user.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a small size capable of recording / reproducing by inserting two types of cartridges accommodating disks of different types (standards) from the same insertion slot. Another object of the present invention is to provide a low-cost and easy-to-operate disk device.

[0004]

In order to achieve the above object, a disk drive according to the present invention comprises a first head for recording and reproducing data on and from a first disk stored in a first cartridge, and a second cartridge. A second head for recording / reproducing to / from a second disk stored in the disk, a first traverse mechanism for transferring the first head in the disk radial direction, and a second traverse mechanism for transferring the second head in the disk radial direction A second traverse mechanism, a spindle motor for holding and rotating one of the first disk and the second disk, the spindle motor, the first head, the first traverse mechanism, and the second traverse mechanism; A traverse base to which a head and the second traverse mechanism are attached;
Cartridge identification means for identifying whether the cartridge is a second cartridge or a second cartridge. The transfer direction of the first head and the transfer direction of the second head are symmetric (180 degrees) about the spindle motor. The first traverse mechanism and the second traverse mechanism are arranged in a direction or a right angle (90 degrees) direction, and the traverse base is rotated around the spindle motor according to the type of the cartridge, and The corresponding head faces the opening window of the cartridge, and the head that does not perform recording / reproducing is transferred to the outer periphery of the disk to a position that does not interfere with the cartridge, and the sector between the rotating traverse side and the stationary main body housing side It is characterized by flexible wiring connection.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing an overall configuration of a recording medium according to a first standard, and FIG. 2 is a plan view showing an overall configuration of a recording medium according to a second standard different from the first standard.

1 and 2, reference numeral 100 denotes a first disk, 110 denotes a first cartridge for accommodating the first disk 100, and 110a denotes a first cartridge 11
0, an opening window 110b, a shutter covering the opening window 110a, 200 a second disk, 210 a second cartridge for accommodating the second disk 200, 210a an opening window provided in the second cartridge 210 , 210b are shutters that cover the opening window 210a, and 210c is the first shutter.
This is a notch for identification with the cartridge.

(Embodiment 1) FIG. 3 is a plan view showing the overall configuration of a disk drive according to the present invention, and FIG. 4 is a side view of FIG. 3 and 4, reference numeral 4 denotes the first disk 10
A spindle motor 8 for holding and rotating the 0 or 2nd disk 200, a clamper 8 for holding the disk 100 or 200 with the spindle motor 4, and a 10 for opening the first disk 100 from the first cartridge opening window 110a. Heads 11 and 12 that perform recording and reproduction for
Is a guide body for guiding the transfer of the first head 10 in the radial direction of the disk, and constitutes a first traverse mechanism 1 together with a head driving means (not shown).

Reference numeral 20 denotes a second cartridge opening window 210a.
The second heads 21 and 22 for recording / reproducing data from / to the second disk 200 are guides for guiding the transfer of the second head 20 in the radial direction of the disk. The mechanism 2 is constituted. Here, the first traverse mechanism 1 and the second traverse mechanism 2 are arranged at positions symmetrical with respect to the spindle motor 4 (positions inverted by 180 degrees).

Reference numeral 3 designates the spindle motor 4, the first and second heads 10, 20, and the first and second traverse mechanisms 1, 2, which are mounted on the spindle motor 3. A traverse base that rotates about 0, a cartridge detection unit 6 that detects the insertion of a cartridge, and a cartridge identification unit 5 that identifies whether the inserted cartridge is a first cartridge or a second cartridge. Reference numerals 10a and 20a denote actuators of the first head 10 and the second head 20, respectively, which have shapes projecting from the optical bases 10b and 20b as shown in the figure.

Reference numeral 7 denotes a sub-board fixed to the traverse base 3 and rotating together with the flexible board 13 and the connector 17.
The first head 10, the flexible 23 and the connector 27
To the second head 20, and also to the spindle motor 4 and driving means for the traverse mechanisms 1 and 2 (not shown).

Reference numeral 50 denotes a main body housing of the disk device.
Reference numeral 0a denotes the position of a cartridge insertion port provided on a standing wall (not shown in FIGS. 8 and 9) of the main body housing 50. Reference numeral 30 denotes a rotation support shaft which is provided coaxially with the rotation axis 0 on the main body housing 50 and rotatably supports the traverse base 3, 40 denotes a main board fixed to the main body housing 50,
Reference numeral 9 denotes a fan-shaped flexible member having a substantially fan-shaped unfolded shape, and both ends thereof are connected to the rotating sub-board 7 (connector 79) and the stationary main board 40 (connector 49) in a state of being bent in a U-shape. .

FIG. 5 is a plan view showing a state where the first cartridge 110 is inserted into the disk device of FIG. 3, and FIG.
FIG. 6 is a side view of FIG. 5. 7 is a plan view showing a state in which the traverse 3 rotates in the disk device of FIG. 5 and the unused second head 20 has been transported to the outer peripheral side of the disk, and FIG. 8 is a front view of FIG.

In FIGS. 7 and 8, reference numeral 51 denotes a cover which covers the upper surface of the unused head (in this case, the second head 20) so as to be movable in the vertical direction. Stopped by being pressed against. In this state, the cover 51 is at a position where it has escaped downward from the cartridge insertion path from the cartridge insertion port 50a of the main body housing.

FIG. 9 shows the disk apparatus of FIG.
FIG. 7 is a front view showing a state where the traverse 3 is raised until the first disk 100 stored in the first cartridge 110 is mounted on the spindle motor 4.

The operation of the disk device having the above configuration will be described with reference to FIGS. First, as shown in FIG. 5, in the first cartridge 110 inserted in the direction of the arrow 110A into the main body housing 50 of the disk device, the shutter 110b was opened and the opening window 110a was opened in the process of being inserted by means not shown. State. Then, the first cartridge 110 inserted to the home position is detected by the cartridge detecting means 6 and the cartridge identifying means 5 and recognized as the first cartridge. Also, as shown in FIG. 6, from the insertion to the home position,
The first cartridge 110 is transported at a height that does not interfere with the spindle motor 4, the heads 10, 20, and the clamper 8.

Next, when it is identified that the cartridge is the first cartridge, as shown in FIGS. 7 and 8, the first head 10 capable of recording and reproducing on the first disk is provided with the first cartridge. The traverse base 3 is moved by arrows (not shown) until it comes under the opening window 110a of 110.
Rotate in direction A. At this time, the second head 20, which is not used at the same time, is moved in the direction of the arrow 20A toward the outer periphery of the disk by the traverse mechanism 2, and the actuator 20a projecting from the second head 20 is moved to the first cartridge 110 at least when viewed from above. To a position that does not interfere with As a result of these operations, the unused actuator 20a of the second head 20 is located directly below the cover 51.

Next, as shown in FIG. 9, the traverse base 3 is raised in the direction of arrow 3B by driving means (not shown) until the first disk 100 is supported on the spindle motor 4 inside the first cartridge 110. Let it. At this time, the actuator 10 projecting from the first head 10
“a” enters the opening window 110 a of the cartridge and faces the first disk 100.

Arrow 3 of second head 20 not used
When the cover 51 moves up to B, the cover 51 approaches just above the actuator 20a of the second head 20, but before the collision, the traverse base 3 pushes up the cover 51 together, so that the traverse base 3 finishes rising to the home position. Then, the cover 51 is in a state of covering directly above the actuator 20a. Since the actuator 20a is also transferred to the outermost periphery, when the traverse base 3 has finished ascending to the home position, it is at a position where it does not interfere with the first cartridge 110.

The clamper 8 is also lowered by means (not shown) in the direction of arrow 8A through the opening window 110a, and together with the spindle motor 4 raised to a fixed position, the first disk 10
0 is sandwiched and held. In such a state, the spindle motor 4 is rotated to stop the unused second head 20, and the first head 10 is transferred by the first traverse mechanism 1 to the outer periphery of the first disk 100. The recording / reproducing operation is performed while performing.

FIG. 10 is a plan view showing a state where the second cartridge 210 is inserted into the disk device of the present invention. The second cartridge inserted to the home position is
Although the cartridge detecting means 6 detects that the cartridge is at a fixed position, the cartridge notifying means 5 cannot detect the cartridge notifying means 5 because of the identification notch 210c, whereby the second cartridge is recognized. After that, the second disc capable of recording and reproducing on the second disc
Of the head 20 of the second cartridge 210
0a, the traverse base 3 is rotated in the direction opposite to the direction of the arrow 3A when the first cartridge is used,
The first head 10 that is not used at the same time is
To move the disk 51 to a position just below the cover 51 toward the outer periphery of the disk.

Next, when the traverse base 3 is raised,
Actuator 20a protruding from second head 20
Is inserted into the opening window 210a of the cartridge and the second
The actuator 10a that is not used and faces the disk 200 of the second cartridge 210 is covered immediately below the cover 51 at a position where it does not interfere with the second cartridge 210. The clamper 8 is also lowered by means (not shown) in the direction of arrow 8A through the opening window 210a, and sandwiches and holds the second disk 200 together with the spindle motor 4 which has risen to a fixed position. In this state, the spindle motor 4 is rotated, and the unused first head 10 is stopped.
The recording / reproducing operation is performed while the second head 20 is transported to the outer periphery of the second disk 200 by the second traverse mechanism 2.

FIG. 11 is a partial perspective view showing the operation of the sector flexible 9 of the disk drive of the present invention. The traverse base 3 is moved from the cartridge waiting intermediate state shown in FIG.
Are rotated by about 180 degrees from the state of recording / reproducing the first disk shown in (1) to the state of recording / reproducing the second disk from the intermediate state of waiting for the cartridge. The connector 79 on the sub-board (not shown) that rotates with this
Also moves from 79 (1) to 79 (2) in the figure, but one end connects to the connector 79 on the rotating sub-board 7 and the other end connects to the connector 49 on the stationary main board 40. Has a fan-shaped unfolded shape and is used by being bent into a U-shape, so that it can smoothly follow these rotations without being twisted.

As described above, in the disk drive of the present embodiment, if both the first cartridge 110 and the second cartridge 210 are inserted from the same insertion port 50a,
The disc device identifies the type of the cartridge, and rotates the traverse base 3 so that a suitable head faces the opening window of the cartridge to perform the recording / reproducing operation. Therefore, the user inserts the cartridge without being conscious of the type of the cartridge. Good operability.

Although the traverse base 3 includes two traverse mechanisms (1 and 2), the use of one spindle motor 4 allows cost reduction.

Further, since both the first cartridge 110 and the second cartridge 210 are formed in a shape close to a quadrangle, and the three sides other than the opening windows are formed as small as possible for miniaturization, the cartridges of the heads which are not used are used. In order to avoid interference with the disk, the transport distance to the outer periphery of the disk requires only a small transport stroke to increase the travel distance required for recording / reproducing on the inner and outer circumference of the disk, and requires any unique parts and operations And not (low cost). In addition, since the unused head is covered with the upper surface of the actuator (the objective lens side) by the cover 51, it is possible to prevent signal deterioration due to dust and the like.

With the above-described structure, the unused head can be prevented from interfering with the cartridge in a planar manner, so that the first and second traverse mechanisms 1 and 2 can be used.
Need not be independently moved up and down with respect to the spindle motor 4, so that stable recording and reproduction can be performed on two types of disks without impairing the correlation position accuracy and rigidity between the spindle motor 4 and the traverse mechanisms 1 and 2. I can do it.

Further, since the electric connection between the rotating portion and the fixed portion is made by the fan-shaped flexible member 9 having a fan-shaped expanded shape and bent in a U-shape, the rotation can be smoothly followed without being twisted. If the sector is formed close to the rotating shaft 30 with a small radius, the space can be reduced, the wiring length can be reduced, the noise can be reduced, and miniaturization and stable recording / reproducing operation can be contributed.

(Embodiment 2) FIG. 12 is a plan view showing the overall configuration of a disk drive according to the present invention. The difference from the first embodiment is that the first head 10
Traverse mechanism 1 so that the transfer direction of the second head 20 is substantially perpendicular to the transfer direction of the second head 20.
And the traverse mechanism 2 is arranged, and the same components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted. In the state shown in FIG. 12, the traverse base 3 'is rotated by about 90 degrees in the direction of arrow 3C so that the first cartridge 110 is inserted and identified, and the first head 10 adapted to the first cartridge 110 faces the opening window 110a of the cartridge. This shows a rotated state.

As described above, in the disk device of the present embodiment, the rotation angle of the traverse base 3 'is 90 degrees in total, so that the device can be downsized and the fan-shaped flex can be shortened.

In the first embodiment, the rotation of the traverse base 3 is changed from the state of waiting for the cartridge to be inserted.
In the case of the first cartridge, it is 90 degrees clockwise, and in the case of the second cartridge, it is 90 degrees counterclockwise. The head and the traverse mechanism, which are frequently used, are arranged below the cartridge opening window from the beginning so that the rotation of the traverse base 3 is unnecessary, and the traverse base 3 is only occasionally inserted when another cartridge is inserted. Even if rotated by 180 degrees, the same effect can be obtained.

The present invention is not limited to the above embodiment, and various applications are possible without departing from the gist of the present invention. For example, in the present embodiment, the types of the disc and the cartridge are the first and second types. For example, even if the first cartridge containing the third disc is inserted, the first head However, it goes without saying that the same effect can be obtained if the recording and reproduction are compatible not only with the first disk but also with the third disk.

Further, even if the configurations of the first and second embodiments are combined, that is, the first to fourth heads are provided with traverse mechanisms at 90 degrees each radially around the center of the spindle motor, more types of heads can be obtained. A disk device that can handle disks can be provided.

Further, even if the cartridge is rotated instead of rotating the traverse as in the embodiment, the unused head retracting structure according to claims 5 and 6 can reduce the size and cost. The effect is not impaired at all.

[0034]

As described above, according to the disk drive of the present invention, a traverse base in which two head traverse mechanisms are arranged symmetrically or at right angles about one spindle is suitable for a cartridge inserted. The head is rotated so as to come, and the unused head is transferred to the outer peripheral side of the disk to a position where it does not interfere with the cartridge, and is dust-proofed by the cover. Therefore, it is possible to provide a disk device which has high security and reliability, and is small in size and low in cost, and which performs recording and reproduction on two types of media.

[Brief description of the drawings]

FIG. 1 is a plan view showing a first cartridge that stores a first disk.

FIG. 2 is a plan view showing a second cartridge that stores a second disk.

FIG. 3 is a plan view showing the entire configuration of the disk device according to the first embodiment of the present invention;

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a plan view showing a state where a first cartridge is inserted in FIG. 3;

FIG. 6 is a side view of FIG.

FIG. 7 is a plan view showing a state in which the traverse base is rotated and an unused head is transferred to the outer peripheral side of the disk in FIG. 5;

FIG. 8 is a front view in FIG. 7;

9 is a front view showing a state in which the traverse base has been raised to a state in which recording and reproduction can be performed in FIG. 8;

FIG. 10 is a plan view showing a state where the second cartridge is inserted in FIG. 3;

FIG. 11 is a partial perspective view showing the operation of the fan-shaped flex in FIG. 3;

FIG. 12 is a plan view showing the overall configuration of a disk drive according to Embodiment 2 of the present invention;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st traverse mechanism 2 2nd traverse mechanism 3, 3 'traverse base 4 spindle motor 5 cartridge identification means 7 sub-substrate 9 fan-shaped flexible 10 1st head 20 2nd head 50 main body housing 51 cover 100 1st Disc 110 First cartridge 110a Opening window of first cartridge 200 Second disc 210 Second cartridge 210a Opening window of second cartridge

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yukiyoshi Nishino 1006 Kazuma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. Terms (reference) 5D046 AA11 AA16 GA15 HA05 5D068 AA02 BB01 CC01 GG05

Claims (6)

[Claims] 1. A disk drive having at least two types of heads capable of performing recording and reproduction on at least two types of cartridge storage type disks, respectively, wherein the head group moves its head around a spindle motor. The traverse base on which the head group and the spindle motor are mounted is rotated around the spindle motor according to the type of the loaded cartridge, and the head corresponding to the disk is opposed to the opening window of the cartridge. Characteristic disk device. 2. A first head for recording / reproducing a first disk stored in a first cartridge through an opening window provided in the cartridge, and a first disk stored in a second cartridge and a type of the first disk. A second head for performing recording and reproduction on a second disk having a different opening through an opening window provided in the cartridge, a first traverse mechanism for transporting the first head in the radial direction of the disk, and a second head. A second traverse mechanism for transferring the disk in the radial direction,
A spindle motor that holds and rotates one of the disk and the second disk, the spindle motor, the first head, the first traverse mechanism, the second head, and the second traverse mechanism. Traverse base with the first cartridge or the second
Cartridge locating means for identifying whether the cartridge is a cartridge or not. The first traverse mechanism and the second traverse mechanism are arranged at symmetrical positions with respect to the spindle motor, and the traverse base is set according to the type of cartridge. A disk drive, wherein a head corresponding to the disk is opposed to an opening window of the cartridge. 3. A first head for recording / reproducing a first disk stored in a first cartridge from an opening window provided in the cartridge, and a first disk stored in a second cartridge and a type of the first disk. A second head for performing recording and reproduction on a second disk having a different opening through an opening window provided in the cartridge, a first traverse mechanism for transporting the first head in the radial direction of the disk, and a second head. A second traverse mechanism for transferring the disk in the radial direction,
A spindle motor that holds and rotates one of the disk and the second disk, the spindle motor, the first head, the first traverse mechanism, the second head, and the second traverse mechanism. Traverse base with the first cartridge or the second
Cartridge identification means for identifying whether the cartridge is a cartridge or not, wherein the first traverse mechanism is configured such that the transfer direction of the first head and the transfer direction of the second head are substantially perpendicular to the spindle motor. And the second
A traverse mechanism for rotating the traverse base about the spindle motor according to the type of cartridge, and a head corresponding to a disk facing an opening window of the cartridge. 4. The wiring from a spindle motor, a head, and a traverse mechanism is collected on a sub-board fixed to a traverse base, and the wiring between the sub-board rotating with the traverse base and a main board fixed to the main body housing side. 3. The wiring connection according to claim 1, wherein a fan-shaped flexible printed circuit board having a substantially fan-shaped developed shape is bent into a U-shape and both ends are connected to follow a rotation operation of the sub-board. 4. The disk device according to 2 or 3. 5. A first head for recording / reproducing to / from a first disk stored in a first cartridge, and a second disk different in type from the first disk stored in a second cartridge. A second head for performing recording and reproduction,
A first traverse mechanism for transferring the first head in a disk radial direction, a second traverse mechanism for transferring the second head in a disk radial direction, and the first head and the first traverse mechanism And a traverse base to which the second head and the second traverse mechanism are attached, and during recording / reproducing, the head that does not perform recording / reproducing is transferred to the outer peripheral side of the disk to a position where it does not interfere with the cartridge. A disk device characterized by the following. 6. The disk device according to claim 5, further comprising a cover for covering the upper surface of the head on which recording and reproduction are not performed during recording and reproduction.